Finding the Fourth Proportional to 76,145.02, 105,077.46 and 42,153.58

Step by Step Solution

1. Step 1: Write the proportion equation
   76,145.02 : 105,077.46 = 42,153.58 : x
2. Step 2: Convert to fraction form
   76,145.02/105,077.46 = 42,153.58/x
3. Step 3: Cross multiply
   76,145.02x = 105,077.46 × 42,153.58
4. Step 4: Simplify right side
   76,145.02x = 4,429,391,116.31
5. Step 5: Solve for x
   x = 4,429,391,116.31/76,145.02
6. Step 6: Final answer
   x = 58,170.46